List Tailwind CSS equivalents in Danger message
What does this MR do and why?
In !154168 (merged) we updated the Danger rule to list the Tailwind CSS equivalent for legacy CSS classes. This was reverted in !155507 (comment 1938000221) when investigating a incident but it didn't need to be reverted since it only changed the Danger rule and didn't affect how Tailwind CSS was built. This MR adds this functionality back.